<!DOCTYPE html>
<html>
<head>
   <link href="build/classic/theme-classic/resources/theme-classic-all.css" rel="stylesheet" />
   <script type="text/javascript" src="build/ext-all.js"></script>
   <script type="text/javascript">

       Ext.onReady(function () {
         Ext.create('Ext.tab.Panel', {
            renderTo: Ext.getBody(),
            height: 100,
            width: 200,
            items: [{
               xtype: 'panel',
               title: 'Tab One',
               html: 'The first tab',
               listeners: {
                  render: function() {
                     Ext.MessageBox.alert('Tab one', 'Tab One was clicked.');
                  }
               }
               },{
               // xtype for all Component configurations in a Container
               title: 'Tab Two',
               html: 'The second tab',
               listeners: {
                  render: function() {
                     Ext.MessageBox.alert('Tab two', 'Tab Two was clicked.');
                  }
               }
            }]
         });
      });
   </script>
</head>
<body>
   <div id="helloWorldPanel"></div>
</body>
</html>